| A | B |
|---|
| continents | large landmasses in the ocean |
| converging | two plates meet and push against each other, splitting one |
| faulting | two plates pull apart |
| geology | study of the earth's physical structure |
| magma | molten rock |
| mantle | solid rocky layer of the earth |
| mountain | land rising at least 2,000 ft above the surrounding area |
| Pangaea | Wegner's supercontinent |
| plain | flat, gently rolling grassland with scattered trees |
| plateau | raised area of flat land with at least one steep side |
| relief | difference in elevation |
| Ring of Fire | circle of volcanic mountains in the Pacific Ocean |
| spreading | two plates pull apart from each other |
| subduction | two plates meet and one slides under the other |
| weathering | breaking down of rock at or near the earth's surface |
